...As for colors of the chip, I think you must be seeing colors that are not on the chip nor on the image as it appears on my computer and phone screens. My screens show the plastic as blue, not gray, and only very slightly lighter than the true color of the chip. Also, in my image, the center inlay of the chip appears as a slightly-dingy white, with no indication of orange, while the real chip has a very, very slight tint of blue compared to the image. The gold "Arica" on the inlay seems to be more visible on the chip when it is viewed straight on, but it tends to fade when viewed at an angle to the light so that it picks up reflection on the rest of the inlay. I think the illumination for my photo was at just such an angle because I prop the chip and a piece of background felt on a slanted board for the photograph. Perhaps the important angle for displaying the gold letters is the one between the light source and the chip rather than the camera angle.
I do have a UV/daylight filter on my lens, but I don't think that really causes a noticable color shift on the images -- I think most of my chip color disparities come from the fact that I set up the tripod and the chip/felt support in the poor incandescent lighting of a small bathroom, where it is also convenient to turn off the lights and set up my UV lamp to reveal hidden images and fluorescence.
Edit: Perhaps, as they say, it's all in the eyes of the beholder. My wife says she can see orange in the center inlay of the same image I am looking at, but she sees the plastic as gray-green with purple markings!